... rolled steel plate 2, 1018k Carbon Steel 3, Hardened Steel 4, (10~90mm)*(60~610mm) 5, ISO9001 2000 Sichuan Liaofu Special Steel Trading ... or at the customers' requirementsSichuan Liaofu Special Steel Trading Co., Ltd.Alloy Stuctural Steel 1, Grade: AISI 1018/GB 20Mn2, ... MT Characters:1, High manganese carbon steel2, Low Carbon Hardened SteelApplication: used in making gear, crankshaft, trestle, hinge, ...